A broken window is an escape point where you will lose money on heating and cooling bills. It is absolutely necessary to replace a broken window pane as soon as it is discovered, to prevent that loss of money and comfort. Glass is available in many thicknesses and can be ordered cut to fit the window, or you can cut it yourself if you have the tools and knowledge. Plexiglass is a plastic alternative that is less expensive, more widely available and much easier for a novice to handle.
Place the flat blade of a screwdriver against the seam around the window. Tap the handle of the screwdriver with a hammer to drive it under the trim that holds the window pane.
Twist the handle of the screwdriver to pry the trim free. Move the screwdriver along the seam and continue the process to remove all four of the trim pieces around the window.
Scrape the blade of the screwdriver along the inside of the window frame to remove the old putty and caulk. Scrape the back of each piece of trim with the screwdriver to clean them as well.
Measure the height and width of the window. Transfer these measurements to the piece of plexiglass. Hold a T-square onto the plexiglass and drag a fine-point marker along the blade to get straight lines.
Hold the T-square alongside each line on the plexiglass. Drag the tip of the blade of a razor knife along each of the lines to score them into the plexiglass. Repeatedly score each line until it breaks easily with just a little pressure. Alternatively, you could cut the plexiglass more quickly with a cutting wheel mounted on a rotary tool.
Roll glazing putty in your hand until it forms a long snake. Push the putty along the inside of the window frame. Coat the entire inner frame and push the piece of plexiglass inside. Cover the perimeter of the plexiglass with more putty.
Hold each piece of trim in place around the window. Drive a 4d nail through each hole in every piece of trim to lock them in place. Scrape away any excess putty with the putty knife to finish the installation.
Tips & Warnings
- Wear eye protection when using hand or power tools.
Things You'll Need:
- Flat screwdriver
- Tape measure
- Fine-point marker
- Razor knife
- Powered cutting tools
- Glazing putty
- Putty knife
- Eye protection
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